EVAL-ADF7020-1DB5 Analog Devices Inc, EVAL-ADF7020-1DB5 Datasheet - Page 10

• Manufacturer Part Number: EVAL-ADF7020-1DB5
• Description: BOARD EVAL ADF7020-2 ADJ FREQ
• Manufacturer: Analog Devices Inc

Specifications of EVAL-ADF7020-1DB5

• Module/board Type: Evaluation Board
• For Use With/related Products: ADF7020 650MHz
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

EVAL-ADF7020-XDBX
13. If you don’t have a built-in BER tester you can estimate the
14. Change the demodulator type to correlator in the software
Readback Function
It’s possible to enable the on-chip ADC on the
ADF7020/ADF7020-1 and readback a selection of parameters,
including battery voltage, temperature(from either the on-board
sensitivity point, by reducing the level on the frequency
generator until you see the RxTxData waveform ‘flickering’
which corresponds to errors in the recevied data. Typically
if you see a flicker/error once per second you can roughly
estimate this to be the sensitivity point. Note the level on
the Signal Generator when this happens. For this setup it
should be –102dBm +/- 2dBm.
and click Update All. Measure the sensitivity again. It
should now be better than –106dBm.
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temperature sensor or TMP37 IC device), Frequency Error,
External voltage and RSSI.
To activate this feature, click on the Sync/Readback Toggle
button. In the sub-window select the type of readback required.
The appropriate value should be displayed on the screen. In Tx
mode the ADC is powered-off by default to save power, so in
order to readback correctly you need to enable the ADC. This
can be done by clicking the status button in the ADC Status
section to “ON” before clicking the Readback button. Since the
ADC is used in Rx mode for the AGC function, the ADC is
powered-on by default in this mode. Thus in Rx mode, valid
battery voltage, temperature, frequency error and external
voltage readback data can only be retrieved when AGC is
disabled. This can be done by manually setting bit 19 (Gain
Control) in register 9 (AGC register) low. In practical cases the
user would typically do a battery volatage readback in Tx mode
Preliminary Technical Data